If a buffer_head is outside i_size, block_write_full_page() will leave it
!buffer_mapped().  We shouldn't attach that buffer to the transaction for
writeout!

This bug has been in 2.5 for some time.

From: David Mosberger <davidm@napali.hpl.hp.com>

Basically, what the patch does is provide two hooks such that platforms
(and subplatforms) can provide time-interpolation in a way that guarantees
that two causally related gettimeofday() calls will never see time going
backwards (unless there is a settimeofday() call, of course).

There is some evidence that the current scheme does work: we use it on ia64
both for cycle-counter-based interpolation and the SGI folks use it with a
chipset-based high-performance counter.


It seems like enough platforms do this sort of thing to provide _some_
support in the core, especially because it's rather tricky to guarantee
that time never goes backwards (short of a settimeofday, of course).

This patch is based on something Jes Sorensen wrote for the SGI Itanium 2
platform (which has a chipset-internal high-res clock).  I adapted it so it
can be used for cycle-counter interpolation also.  The net effect is that
"last_time_offset" can be removed completely from the kernel.

The basic idea behind the patch is simply: every time you advance xtime by
N nanoseconds, you call update_wall_time_hook(NSEC).  Every time the time
gets set (i.e., discontinuity is OK), reset_wall_time_hook() is called.

From: Adrian Bunk <bunk@fs.tum.de>

Fix this:

drivers/mtd/maps/map_funcs.c: In function `simple_map_read64':
drivers/mtd/maps/map_funcs.c:38: warning: implicit declaration of
function `__raw_readll'

From: Andi Kleen <ak@suse.de>

Some recent subarch interface changes caused macro redefinition warnings
for GET_APIC_ID and APIC_ID_MASK with the generic subarchitecture.  Fixing
it properly required some reorganization by giving the generic arch a
mach_apicdef.h too.

From: Andi Kleen <ak@suse.de>

A brown paper bag bug, noticed by Ralf Baechle.

i386 needs to define STAT_HAVE_NSEC too, otherwise it won't copy
the nanosecond values to user space.

This /proc tunable sets the kupdate interval.  It has a couple of problems:

- No way to turn it off completely (userspace dirty memory management
  solutions require this).

- If it has been set to one hour and then the user resets it to five
  seconds, that resetting will not take effect for up to an hour.

Fix that up by providing a sysctl handler.  Setting the tunable to zero now
disables the kupdate function.

From: Andi Kleen <ak@suse.de>

John Stultz noticed that kirqd didn't start because of another logic error,
which broke irq balancing.  This was still a fallout from the generic
subarchitecture changes.

Actually it still refuses to balance anything on my test box, but perhaps
I'm just not able to generate enough interrupts.

Anyways, with this patch the thread is running again at least.

We end up inspecting this field in zap_page_range(), on the mmap error path.
Best initialise it to something...

From: Manfred Spraul <manfred@colorfullife.com>

We need to present more information in /proc/slabinfo now the magazine
layer has been added.

The slabinfo version has been updated to 2.0.

From: Manfred Spraul <manfred@colorfullife.com>

slab.c is not very efficient for passing objects between cpus.  Usually this
is a rare event, but with network routing and cpu-affine NICs it is possible
that nearly all allocation operations will occur on one cpu, and nearly all
free operations on another cpu.

This causes slab memory to be returned to slab's free page list rather than
being cached on behalf of the particular slab cache.

The attached patch solves that by adding an array of objects that is shared
by all cpus.  Instead of multiple linked list operations per object, object
pointers are now passed to/from the shared array (and thus between cpus) with
memcopy operations.  On uniprocessor, the default array size is 0, because
the shared array and the per-cpu head array are redundant.

Additionally, the patch exports more statistics in /proc/slabinfo and make
the array sizes tunable by writing to /proc/slabinfo.  Both changes break
backward compatibility, user space scripts must look at the slabinfo version
and act accordingly.

The size of the new shared array may be altered at runtime, by writing to
/proc/slabinfo.

The new parameters for writing to /proc/slabinfo are:

	#echo "cache-name limit batchcount shared" > /proc/slabinfo

For example "size-4096 120 60 8" improves the slab efficiency for network
routing, because the default values (24 12 8) are too small for the large
series generated due to irq mitigation.  Note that only root has write
permissions to /proc/slabinfo.

These changes provided an overall 12% speedup in Robert Olson's gigE
packet-formwarding testing on 2-way.

disk->minor_shift is not used anymore.  Remove it.

Fix various typos and and information about the new kconfig features.

This creates the configuration in the destination directory instead of
the current directory.

conf: better choice interface
      don't ask for unchangable symbols

mconf: mark unchangable symbols with '---'
       update exit text (from Sam Ravnborg <sam@ravnborg.org>)

qconf: update debug output

Add a number of warnings to avoid misuse of the previously added features
(most important check for recursive dependencies).

The 'range' keyword allows to define a lower and upper limit for integer
and hex symbols.

The 'select' keyword defines a lower limit for symbols and allows to
select other symbols when a symbol is selected, e.g.:

config JOLIET
	bool "Microsoft Joliet CDROM extensions"
	select NLS

This means when JOLIET is selected, NLS will be selected as well.

"default" accepts now not only a single symbol but also an expression
which can be assigned to boolean and tristate symbols.

Add the following new keywords: def_tristate, def_bool, def_boolean,
select, enable and range.

Add support for def_tristate and def_bool, which combines default and
bool/tristate into a single statement and a allows simpler definition
of derived symbols.

This changes P_ROOTMENU into a MENU_ROOT flag and also fixes some qconf
usability problems.

Some gconf fixes by Romain Lievin <roms@tilp.info>.

Remove old code and debugging macros which were used by the cml1->kconfig
converter.

 ETH1394: Use 64bit EUI as the hardware address.
 ETH1394: Support broadcast packets.
 SBP2   : Fix max_payload for > S400
 CORE   : Fix iso.c compilation by including linux/sched.h directly.

The was a race triggered by heavy MT usage that could have caused
processes in D state. Bad Davide, bad ...

Also, the semaphore is now per-epoll-fd and not global. Plus some comment
adjustment.

Now that we use idedefault_driver.drives instead of ata_unused, the order
of drives on the driver->drives becomes significant; note that when we added
to ata_unused, we had done that to the end of list.

So we should do the same with the "drives" list.

into home.transmeta.com:/home/torvalds/v2.5/linux

  - added drivers for Digigram VXPocket V2, VXPocket 440 (pcmcia)
  - added driver for Digigram VXP220 V2/Mic (PCI)
  - added driver Harmony chipset (parisc)
  - added OPL4 driver
  - code cleanups - removed 2.2 and 2.4 code
  - nm256 driver - added Dell Latitude LS workaround
  - ac97 driver - fixes in intialization
  - usb audio driver - strlcat() fixes

into nuts.ninka.net:/home/davem/src/BK/net-2.5

into suse.cz:/home/perex/bk/linux-sound/linux-sound

With this the area that is shared among struct sock and struct tcp_tw_bucket
is exact, i.e. there is no fields that are in struct sock and only reused
for other reasons in tcp_tw_bucket, while keeping both struct free of holes.

into nuts.ninka.net:/home/davem/src/BK/net-2.5

Avoid touching the next page in the NMI handler stack validity check.

That way, we can start unmapping pages that aren't in use, without
triggering this case.